231413761 has 4 divisors (see below), whose sum is σ = 232887892. Its totient is φ = 229939632.

The previous prime is 231413747. The next prime is 231413789. The reversal of 231413761 is 167314132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99600400 + 131813361 = 9980^2 + 11481^2 .

It is a cyclic number.

It is not a de Polignac number, because 231413761 - 2⁹ = 231413249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231413731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736830 + ... + 737143.

It is an arithmetic number, because the mean of its divisors is an integer number (58221973).

Almost surely, 2^231413761 is an apocalyptic number.

It is an amenable number.

231413761 is a deficient number, since it is larger than the sum of its proper divisors (1474131).

231413761 is a wasteful number, since it uses less digits than its factorization.

231413761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474130.

The product of its digits is 3024, while the sum is 28.

The square root of 231413761 is about 15212.2898013415. The cubic root of 231413761 is about 613.9453676806.

Adding to 231413761 its reverse (167314132), we get a palindrome (398727893).

The spelling of 231413761 in words is "two hundred thirty-one million, four hundred thirteen thousand, seven hundred sixty-one".